Valve



AU8 17, 1937. M. F. RICHARDSON 2,090,486

VALVE Filed Sept, 28, 1935 2 Sheets-Sheet l @Cg- I- IiHlmlll 24, L 2 2@M a u Im V 5 "7 127 JY Q l5 B2 ya l 2.

Z1 W1 TNESSES: 7 5 g [NVEN TOR:

Aug. 17, 1937. M F, R|CHARD50N 2,090,486

VALVE Filed Sept. 28, 1935 2 Sheets-Sheet 2 WITNESSES: INVENTOR:

@M y WW Patented Aug. 17, 193'.'

UNITED STATES PATENT ol-Flcla VALVE- D Maurlce F. Richardson, Berwyn,Pa. Application september 2s, 1935, serial No. 42,576 1 claim. (ci.s1-'144) This invention relates broadly to disc valves, and moreparticularly to such valves as are used in pumps and compressors, andwhich are subject to heavy duty. l The primary object of the presentinvention is to provide a disc valve of the above indicated typecharacterized by maximum passage for the gas, air or liquid, whereby thecapacity of such valves is greatly increased without impairment voitheir efliciency.

Another object of this invention is the provision of a center hole discvalve with a spiderlike stop or guard means through which the gas, airor liquid can flow freely around both the inner and outer peripheriesthereof.

A further object of the invention is to furnish a valve of the indicatedclass which embodies structural refinements conducive to increaseddurability.

The foregoing and other objects of this inilcation, reference being madeto the accompanying drawings, and the novel means by which said objectsare effectuated is more specifically expressed in the claim.

2 In the drawings:

Fig. I is a perspective view of a single-type valve unit embodying thepresent improvements.

Fig. II is an axial vertical section of the same.

Fig. III is a perspective view of the valve seat.

Fig. IV is a perspective view of the combined valve guard and stem.

Fig. V is a perspective view of a spider-like valve guide hereinafterfully explained.

3- Fig. VI is a sectional plan, taken approximately as indicated by thearrows VI-VI in Fig. II.

Fig. VII is a sectional view, somewhat similar to Fig. II, of a.slightly modified form of the invention; and

Fig. VIII is a perspective view of the combined valve guard and stemembodied in the unit of Fig. VII.

In all the views, corresponding parts are designated by the same orsimilar reference char- 45 acters excepting Where structuraldistinctions occur.

Referring more in detail to the drawings, and

firstly to Figs. I-VI, inclusive, the ported seatmember iscomprehensively designated by the 50 reference character I, the sameembodying an outer annular section 2, a central boss 3, and connectingarms 4, to define tapering flow-passage 5 therethrough. 'Ihe seat-memberI is also formed with a stop shoulder 6 for forced- 55 'fit engagementin the usual partition or pumpvention will be set forth in the followingspecichest deck, not shown, or elsewhere as desired. The central boss 3is axially bored at 1 for reception of the screw-threaded end of thestem 8, of a novel form of valve stop means or guard 9, later on fullydescribed. 5

The ported scat-member I, it will be observed, is concentrically groovedat III to define a central embossment II, and an inner annularv seatingsurface I2, while the arms 4 are preferably inset at I3, and the memberI suitably reduced at I4 10 to denne an outer annular surface I5.

The valve disc I6 is preferably formed from sheet metal to provide acentral oriiice I'l of comparatively large diameter, and it is providedwith inner and outer seating surfaces I8, I9, respec- 15 tively, saidsurfaces being separated by an intervening arched ridge 20, while theinner and outer-peripheral edges of the valve disc I6 areupwardly-flared or rounded at 2I, 22, respectively, to ease operation ofthe valve. 20

'Ihe spider-like stop means or guard 9, as best understood from Fig. IV,embodies a central portion 23 of Grecian cross-formation, for example,with the radially projecting parts or limbs reduced and downwardlyarched at 24 to form inverted U-shaped arms or ribs for termination,conveniently although not essentially, in an annular guard-portion 25,which limits the lift of the valve disc I6. It is to be particularlyremarked that the guard central portion 23 is 30 inset relative to theplane of guard portion 25, and shouldered relative to the stem 8 4toform an abutment for a purpose later explained; while said stem issuitably finished for free reception of a removable spider orvalve-guide member 25, Fig..V. This valve-guide member 26 embodies ahub-portion 21, with radial arms or ribs 28 substantially conforming tothe outlines of the guard central portion 23, while it serves as a,iambmeans. intermediate said central portion and the seat memberembossment I I, for rigidly securing the stop means or guard 9 to thevalve seat member I, in an obvious manner. Furthermore, the arms 28 are,preferably, convergentlytapered radially-outwards to induce streamline'45 now through the valve.

The valve disc Ii is held in place by a helical-spring 29, undercompression, intermediate said disc inner circumferential rounding 2|and the under side of the guard means archings 24.

Referring now to the modification of Figs. VII and VIII, which showanother form of the valve, it is to be remarked that the removable valveguide element 26 .is dispensed with, and that the radial arms 28', ofthe guard central portion 55 2t', a'redownwardly extended, as shown, toengage the seat central portion Il. Furthermore. the 'seat Il in thisform of the invention is axially bored at 32 for passage of the guardstem Il, and said guard is conveniently secured in place by means of alock nut u and cotter pin II applied to the lower end of said stem. Inall other respects this form of the inventi substantially conforms withthat previously described: accordingly. corresponding referencecharacters are employed and further description thereof dispensed with,yin order to avoid repetitive explanation. It is to be observed thegroove Ill in the seat face is not provided so that the inner seatingsurface Il of the valve disc Il ca- 1 acts with the outer confines ofthe central portion lll, in an obvious manner. It is to. be particularlynoted. however, that by forming the spider valve guide arms 2l' as anintegral part of the guard 9. as just described, in case of wear ordamage occurring to said arms, replacement of the entire guard 9 becomesnecessary; where'- as by utilizing `the removable spider-like guideelement 2| of Figs. I-VI, it is only needful to replace same, when wornor damaged. with resultant economical results.

.departure from the scope of said invention as more `particularlydefined by the following claim. Having thus described the invention, Iclaim: In a valve comprising a ported seat member, a

spring-influenced axially-apertured valve disc coactiva with the seatmember; and stop means in the form of a spider-like structure having anaxial stem for its attachment to the seat member, said structurecomprising radiating portions in the form of inverted U-shaped radialprojections, the outer parts whereof merge into an integrally-formedannular guard ring, and the inner parts convergently-taper outwardswith' provision of an abutment shoulder, and a removable valve guidemember centrally bored for engagement on the axial stem intermediate theshouldered abutment and the valve seat member. said guide memberembodying radial ribs of coiresponding section for alignment with thespiderlike structure U-shaped inner parts, whereby streamlined flowlthrough the valve is induced.

MAURICE F. RICHARDSON.

